Hash Generator
Generate MD5, SHA1, SHA256 hashes.
How to Do It Manually
Hashing converts any input into a fixed-length string using a hash function. Common functions: MD5, SHA-1, SHA-256. Cannot be reversed (one-way).
Frequently Asked Questions
What's a hash used for?
Verify integrity (check if a file changed), store passwords securely, create checksums, generate IDs.
Is SHA-256 or MD5 better?
SHA-256 (256-bit). MD5 is outdated and vulnerable; SHA-1 is deprecated. Use SHA-256, SHA-3, or bcrypt for passwords.
Can I unhash something?
No, cryptographic hashes are one-way. You can only verify by hashing again and comparing.